I spent this morning at the “Cairo to Constantinople” at the Buckingham Palace Queen’s Gallery – a fascinating collection of images from the Prince of Wales’ Royal Tour of 1862. Most images were taken by the Victorian landscape photographer Frances Bedford.

The tour started in Cairo, headed to Aswan, back up the Nile via many of the most famous Pharonic and Roman Egyptian sites and Ottoman Empire sites, through modern day Israel, Lebanon, Syria, Palestine, Turkey and Greece.

My favourites are those that remind me most of my tour with On the Go a few years ago.

A genuinely interesting method. Tge image luminance is known. So rather than using the RGB colourspace of Photoshop/Gimp, they use an ITU-R BT.709 colourspace. They keep the luminance signal and generate the 2 colour difference signals, Cr and Cb.

This makes a lot of sense. The colours were very lifelike and the techniques worked for motion pictures.